Adjustable subsoil attachment.



W.- I. PRATER.

ADJUSTABLE SUBSOIL ATTACHMENT. APPLICATION FILED JUNE24,1911.

Patented June 4, I912.

ll sub-soil attachment, and for maintaining the the following is a specification.

WILLIAM I. 'rna'rnn, or Jasrnn, e-noaera.

ADJUSTABLE smasorn arracmvinnr.

inseam.

Specification of Letters Patent.

Fat-elite d Jane 4. 18312..

Application filed June 24, 1911. Serial No. 535,210.

To all whom it may concern:

Be it known that 1, WILLI M I. PRATER, a citizen of the United States, residin at J asper, in the county of Pickens and gtate of Georgia, have invented a new and useful Adjustable Snbsoil Attachment, of which It is the object ofthenresent invention to provide a sub-soil attachment for a plow,

equipped with novel means for adjusting the same in predetermined positions.

A further object of the invention is to provide a sub-soilattachment, the mountings of which. will enter into the construc tion of the plow, to increase the strength of the same. I I

' With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the c0mbination and arrangement of parts and in the --deta1-ls of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawings,-Figure 1 shows the invention in perspective; Fig. 2 is a. side elevation, parts being broken away; and Fig. 3 is 1 3 arggunited by a cross brace 5, and converging races 6 unite the handles 3 with the plow'beam 2. Located between the converging braces 6, is a rearwardly ektendedsupporting bar 7 the forward end of which is connected, as shown at 8, together with the converging braces 6, to the plow beam 2, the rear endof the supporting bar 7 being secured, as shown at 9, to the intermediate portion of the cross brace 5. Fixed to and rising from the supporting bar 7, is a segmeat-10, the ends of which are secured to the supporting bar 7 ,as shown at 11.

The invention further includes a rearwardly extended operating lever 12, to the lower, forward end of which is secured an angle member 14, as shown at 15, a pivot pin 16 being extended through the angle member 14, through the/lever 12, through a. washer I 30 interposed between the angle member 14 and the lower end of the operat ing lever 12, and through the supporting bar 7, the pivot pin 16 obviously constituting afulcrum for the lever 12, the lower end of the angle member 1 1 extending downwvardly, approximately at right angles to the lever 12. The angle member 1%. at its apex is oft-set from the lever 12 to provide for the insertion of the washer 30. The lever 12 and the angle member furnish a double walled fulcrum and the washer prevents a lateral bending of the angle member.

Through the lower end of the depending portion of the angle member 11, a L 17 is extended, the same serving as a mount ing for the upper ends of a pair of links 18-, disposed upon both sides of the depending portion of the angle member 11. Throughthe lower ends of the links 18, a pivot pin 19 is extended, the pivot pin 19 passing through the intermediate portion of the sub-soil beam 20, the sub-soil beam being located between the links 18. The sub-soil beam 20 is bifurcated at its forward end, as shown at 26h, to span the plow beam 1, and through the bifurcated portion 24 of the sub-soil beam, and through the plow beam 2, is passed a pivot element 21, constituting a fulcrumfor the sub-soil beam. The sub-soil beam is rearwardly and downwardly curved as shown at 22, and carries the sub-soil blade 23, which may be of any desired. construction.

The lever 12 carries a latch 26, controlled by a rod 27, connected with a hand lever 28, tulcrume d upon the operating lever 12, ad j acent the upper end of the operating lever. The latch 26 is actuated by a compression spring 29, to engage with the segment 10. As will be readily understood, the lever 28 may be manipulated to free the latch 26 from the segment 10, whereupon the operating lever 12 may be swung upon its pivotal .latch 26, the segment 10, and diverging braces connected at their forward ends with the beam and with the supporting bar, and at v their rear ends connected with the handles.

The members 12 and 14- constitute a. bell crank, the upper end of which lies between the handles 3, within easy reach of the ope 'ator, so that the sub-soil blade 23 may readily be raised and lowered, the member 12 and the hand lever 28 being located in an accessible position. Owing to the fact that the angle member 14: is applied to the lower, forward end of the operating lever 12, the lever is, reinforced at its fulcrum point, and wear upon the operating member, due to its pivotal movement, is reduced. to a minimum. h'loreover, the angle member 14 and the washer 30, serve to strengthen the operating member, adjacent its fulcrum, and to enable the operating member to withstand the strain imposed upon it both by the dragging action of the sub-soil blade 23, and by the manipulation of the operating lever 12 to adjusttbe sub-soil blade.

The supporting bar 7 serves not only as a means for upholding the sub-soil beam- 20, but, at the same time, serves as a connecting element between the plow beam 2 and the cross brace 5, thus serving to strengthen the mounting of the handles 3.

It is to be noted that the device herein disclosed is primarily an attachment for a plow of standard construction, the device comprising a triangular frame formed by the members 5 and 6, the frame being strengthened by the bar 7, the frame being adapted, atonce, to serve as a brace between the plow handles 3 and the plow beam 2, and

to serve as a place of attachment for the movable sub-soiling means.

Having thus described the invention, what is claimed is As an article of mamtfacture, a sub-soiling attachment for a plow, comprising a triangular frame adapted to serve at once as abrace between the plow beam and thehandles of the plow and as a support. for movable sub-soiling means, the frame comprising a cross brace adapted for terminal connection with the plow handles, a supporting bar projecting from the intermediate portion of the cross brace and braces converging from the ends of the cross brace into union with the supporting bar, the united ends of: the bar and ot the converging braces being adapted for connection with the plow beam; a segment secured to the supporting bar: a bell crank lever fulcrumed at its angle upon the supporting bar and in cluding upper and lower arms both of which extend i iarwardly; latch mechanism carried by the upper arm t'or engagement with the segment: a sub-soil beam located below the supporting bar and having means at. its torward end for connection with a plow beam, the rear end of the sub-soil beam being downwardly and rearwardly extended; a sub-soil share attached to the rear end of the sub-soil beam; and a link pivotally connected with the intermediate port-ion of the sub-soil beam and with the lower arm of the lever. K

In testimony that I claim the foregoing as my own, I have hereto at'tixed my signature in the presence of two witnesses.

WILLIAM I. PRATF-R. Witnesses J no. S. Wool),

A. O. CAGLE.

Copies of this patent may-be obtained for five cents each, by addressing'the Commissioner of Pate'nts,'

Washington, D. C. 

